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Review: JDS Labs O2 (Black edition) + O2/ODAC discussion - Page 7

post #91 of 498

Well, spent a good amount of time with the O2.  Tried various phones as well as different sources including the Behringer UCA202 to give the O2 some Foobar love.  For the most part portable sources were my go to.  The last few months I have been really interested in battery powered amps with a bit larger footprint than the traditional portable amps.  I still love the desktops though, but trying out new things keeps it real.

 

The phones I was most interested in trying with the O2 were the D5000s.  The O2 tightened everything up nicely with no bass bloat while retaining that sexy, smooth Denon love.  I listen to a variety of music- rock, metal, dubstep, house, trance, hip etc. and the combo delivered.  Very clean and clear.

 

I guess I can touch up on this without breaking any rules..lol.....---  For those newer members, the designer of this amp used to be a member.  Many head-fiers sparred with him on some of his claims on a certain 'thread', myself included (all in good fun of course..cool.gif).  Back and forth we all went...lol...

 

Well, all I have to say is that the wavman talked the talk and he walked the walk in designing a great amp.

 

Cheers!!!

 

Gotta get ready for the Heat game and a little Youthanasia always gets the juices pumping....

 

beerchug.gif

 

 

 

 

 

 

 

 

post #92 of 498

beerchug.gif

post #93 of 498

Great..glad its working out good for you!

Alex

post #94 of 498
Thread Starter 
Quote:
Originally Posted by adydula View Post

Great..glad its working out good for you!
Alex

I agree, enjoy!
post #95 of 498
Thread Starter 
Double post
Edited by ostewart - 1/11/13 at 6:09am
post #96 of 498
Quote:
Originally Posted by adydula View Post

Hmmm, I never get popping sounds when plugging in the USD ODAC? But I dont even think of doing that often at all...I just tried it about 10 times and no popping sound here at all.

 

Alex

 

 

Quote:
A pop upon connecting ODAC is normal. Will reply to your longer message in a moment.
 
Thanks,
John Seaber JDS Labs, Inc. | Tel: 314-252-0936
post #97 of 498
Quote:
Originally Posted by randomkid View Post

I got rubber feet with my O2 and C421, I thought they came as standard, but I did put different feet on my O2, slightly bigger as it's not really portable so it doesn't matter.

KP the O2 would be perfect as a transportable for your laptop

 

I got one this past Monday. It is indeed a perfect laptop amp. It's small enough to still be easy to carry, but it has enough power to handle full size cans. The original intent was to drive DT990's or K550's at the office and T1's when I used my laptop in front of the TV. 

 

As it turned out, it did such an excellent job on the T1's I found myself taking the Beyers into the office all week. $150 dollar amp on $1200 'phones. Heh. I don't think I can bring myself to throw the T1's into my laptop bag for travel, but it is tempting.

 

Source from laptop is HRT MS II, FLAC, JRiver WSAPI Event, no DSP.

 

Build quality is excellent, which is what was expected after receiving a C421 earlier this year from JDS. Do wish the cover to get to the 9V batteries did not require screw driver to remove, as it'd be nice to be able to easily drop a couple of non-rechargeable batteries in there in a pinch.

 

KP

post #98 of 498
Thread Starter 
Quote:
Originally Posted by TheKillerPiglet View Post

I got one this past Monday. It is indeed a perfect laptop amp. It's small enough to still be easy to carry, but it has enough power to handle full size cans. The original intent was to drive DT990's or K550's at the office and T1's when I used my laptop in front of the TV. 

As it turned out, it did such an excellent job on the T1's I found myself taking the Beyers into the office all week. $150 dollar amp on $1200 'phones. Heh. I don't think I can bring myself to throw the T1's into my laptop bag for travel, but it is tempting.

Source from laptop is HRT MS II, FLAC, JRiver WSAPI Event, no DSP.

Build quality is excellent, which is what was expected after receiving a C421 earlier this year from JDS. Do wish the cover to get to the 9V batteries did not require screw driver to remove, as it'd be nice to be able to easily drop a couple of non-rechargeable batteries in there in a pinch.

KP

I also thought it drove the T1 really well, I was very impressed. Glad your enjoying it.
post #99 of 498

It drives my LCD2 just wonderfully....as well as AKG Q701's,,,,,

 

Alex

post #100 of 498
Thread Starter 
Impressive power from such a small amp.
post #101 of 498
Quote:
Originally Posted by randomkid View Post


I also thought it drove the T1 really well, I was very impressed. Glad your enjoying it.

 

By a happy coincidence, the AC plug on the O2 is the same as the one for my Asus laptop. Carrying charger for O2 is now optional. Yay.

 

KP

post #102 of 498
Quote:
Originally Posted by TheKillerPiglet View Post

By a happy coincidence, the AC plug on the O2 is the same as the one for my Asus laptop. Carrying charger for O2 is now optional. Yay.

 

KP

 

Even if the plug is the same, how does this alleviate the need to carry the other wallwart?  It's not like the laptop AC/DC adapter (well, it's a SMPS) outputs AC for the O2.

post #103 of 498

Make sure its a AC adapter not a AC to DC adpapter! 

Alex

post #104 of 498

It outputs 19V AC so it is within the power range suggested at JDS.

 

KP

post #105 of 498
Quote:
Originally Posted by adydula View Post

It drives my LCD2 just wonderfully....as well as AKG Q701's,,,,,

Alex
I personally haven't heard the LCD-2 with the O2, but when I brought the O2 to a local Head-Fi meet, some of the members said the O2 did a pretty good job at driving the LCD-2 but lacked a bit in the bass department.

A newer K 701 sounds absolutely fantastic with the O2 though. I couldn't be happier with my O2 purchase.
Quote:
Originally Posted by adydula View Post

Make sure its a AC adapter not a AC to DC adpapter! 
Alex
Since my AC adaptor is dead at the moment, I asked my dad if we had one lying around. Apparently AC adaptors aren't very common in our house, hahahaha. He graduated with an electrical engineering degree so he kind of explained to me why having an AC adaptor would be beter in some cases versus using an AC/DC adaptor. Cool stuff and it definitely fits what the O2 is trying to achieve.
Edited by miceblue - 1/12/13 at 12:00pm
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